<template>
	<section>
		<!--工具条-->
		<el-col :span="24" class="toolbar" style="padding-bottom: 0px;">
			<el-form :inline="true" :model="filters">
				<el-form-item>
					<el-input v-model="keyword" placeholder="请输入关键字"></el-input>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" v-on:click="keywordQuery" v-perm="'department:list'">查询</el-button>
				</el-form-item>
				<el-form-item>
					<el-button type="primary" @click="handleAdd"  v-perm="'department:save'">新增</el-button>
				</el-form-item>
			</el-form>
		</el-col>

		<!--列表-->
		<el-table :data="departments" highlight-current-row v-loading="listLoading" @selection-change="selsChange" style="width: 100%;">
			<el-table-column type="selection" width="55">
			</el-table-column>
			<el-table-column type="index" width="60">
			</el-table-column>
			<el-table-column prop="sn" label="部门编号" width="120" sortable>
			</el-table-column>
			<el-table-column prop="name" label="部门名称" width="120" sortable>
			</el-table-column>
			<el-table-column label="部门状态" width="100" >
        <template scope="scope">
          <span v-if="scope.row.state==1" style="color: #00ff00">启用</span>
          <span v-else style="color: #ff0000">禁用</span>
        </template>
			</el-table-column>
      <el-table-column prop="manager.username" label="部门经理" width="100">
      </el-table-column>
      <el-table-column prop="parent.name" label="上级部门" width="120" >
      </el-table-column>
			<el-table-column label="操作">
				<template scope="scope">
					<el-button size="small" @click="handleSave(scope.$index, scope.row)"  v-perm="'department:save'">编辑</el-button>
					<el-button type="danger" size="small" @click="handleDel(scope.$index, scope.row)" v-perm="'department:delete'">删除</el-button>
				</template>
			</el-table-column>
		</el-table>

		<!--工具条-->
		<el-col :span="24" class="toolbar">
			<el-button type="danger" @click="batchRemove" :disabled="this.sels.length===0" v-perm="'department:patchDel'">批量删除</el-button>
			<el-pagination layout="prev, pager, next" @current-change="handleCurrentChange"
                     :page-size="pageSize" :current-page="currentPage" :total="totals" style="float:right;">
			</el-pagination>
		</el-col>

		<!--编辑界面-->
		<el-dialog :title="title" :visible.sync="saveFormVisible" :close-on-click-modal="false">
			<el-form :model="saveForm" label-width="80px" :rules="saveFormRules" ref="saveForm">
				<el-form-item label="部门编号" prop="sn">
					<el-input v-model="saveForm.sn" auto-complete="off"></el-input>
				</el-form-item>
				<el-form-item label="部门名称" prop="name">
					<el-input v-model="saveForm.name" auto-complete="off"></el-input>
				</el-form-item>
				<el-form-item label="状态">
					<el-radio-group v-model="saveForm.state">
						<el-radio class="radio" :label="1" >启用</el-radio>
						<el-radio class="radio" :label="0" >禁用</el-radio>
					</el-radio-group>
				</el-form-item>
        <el-form-item label="部门经理">
         <!-- <el-input v-model="saveForm.manager_id" auto-complete="off"></el-input>-->
          <el-select v-model="saveForm.manager_id" placeholder="请选择">
            <el-option
                v-for="item in managers"
                :label="item.username"
                :value="item.id">
              <span style="float: left">{{ item.username }}</span>
              <span style="float: right; color: #8492a6; font-size: 13px">{{ item.phone }}</span>
            </el-option>
          </el-select>
        </el-form-item>
        <el-form-item label="上级部门">
            <el-cascader v-model="saveForm.parent_id"
              :options="deptTree"
              :props="{ checkStrictly: true,label:'name',value:'id'}"
              clearable></el-cascader>
        </el-form-item>
			</el-form>
			<div slot="footer" class="dialog-footer">
				<el-button @click.native="saveFormVisible = false">取消</el-button>
				<el-button type="primary" @click.native="saveSubmit" :loading="saveLoading">提交</el-button>
			</div>
		</el-dialog>

	</section>
</template>

<script>
	export default {
		data() {
			return {
			  // 1.分页查询的模型数据
        departments: [],
        listLoading: false,
        currentPage: 1,
        pageSize: 5,
        totals: 0,

        // 2.高级查询
        keyword: '',

				sels: [],//列表选中列

        // 添加或修改
				saveFormVisible: false,//编辑界面是否显示
        title: "",
				saveLoading: false,
				saveFormRules: {
					sn: [
						{ required: true, message: '请输入部门编号', trigger: 'blur' }
					],
          name: [
            { required: true, message: '请输入部门名称', trigger: 'blur' }
          ]
				},
				//编辑界面数据
				saveForm: {
					id: null,
          sn: '',
					name: '',
					state: 1,
          manager_id: null,
          parent_id: null
				},
        //5.保存部门经理
        managers:[],
        //6.保存部门树
        deptTree:[]
			}
		},
		methods: {
			//1.获取部门列表
			getDepartments() {
			  // 组装参数
				let paras = {
					currentPage: this.currentPage,
					pageSize: this.pageSize,
          keyword: this.keyword
				};
				this.listLoading = true;
				this.$http.post("/department",paras).then(res=>{
          this.departments = res.data.data;
          this.totals = res.data.totals;
          this.listLoading = false;
        }).catch(res=>{
          this.$message.error("系统繁忙，请稍后重试！");
        })
			},
      //2.分页查询 - 点击分页栏触发方法
      handleCurrentChange(val) {
        this.currentPage = val;
        this.getDepartments();
      },
      //3.高级查询处理bug
      keywordQuery(){
			  // 设置当前页为1
        this.currentPage = 1;
        this.getDepartments();
      },

			//4.删除
			handleDel: function (index, row) {
				this.$confirm('确认删除该记录吗?', '提示', {
					type: 'warning'
				}).then(() => {
          this.listLoading = true;
          this.$http.delete("/department/" + row.id).then(res => {
            // 成功之后的处理
            if (res.data.success) {
              // 计算总页数 = 最后一页
              let totalPage = Math.ceil(this.totals/this.pageSize);
              // 如果当前页是最后一页，且是最后一条数据，并且不是第一页，当前页 = 当前页-1
              if(this.currentPage==totalPage && (this.totals-1)%this.pageSize==0 && this.currentPage!=1){
                this.currentPage = this.currentPage -1;
              }
              this.getDepartments();
            } else {
              this.$message.error("系统繁忙，请稍后重试！！")
            }
            this.listLoading = false;
          }).catch(() => {
            this.$message.error("系统繁忙，请稍后重试！！")
          })
        }).catch(()=>{

        });
			},

      // 5.选项改变的时候触发：参数时每一个选中的对象
      selsChange: function (sels) {
        this.sels = sels;
      },
      // 6.批量删除
      batchRemove: function () {
        var ids = this.sels.map(item => item.id);//数组 [1,3,5]
        this.$confirm('确认删除选中记录吗？', '提示', {
          type: 'warning'
        }).then(() => { //点击确定走这里
          this.listLoading = true;
          this.$http.patch("/department",ids).then(res=>{
            if(res.data.success){
              this.currentPage = 1;
              this.getDepartments();
            }else{
              this.$message.error("系统繁忙(500),请稍后重试！")
            }
            this.listLoading = false;
          }).catch(res=>{
            this.$message.error("系统繁忙(404/400),请稍后重试！")
          })
        }).catch(() => {
        });
      },
			//显示编辑界面
			handleSave: function (index, row) {
			  this.title = "编辑";
				this.saveForm = Object.assign({}, row);
				// 加载所有的部门经理
        this.getManagers();
        //加载  部门树
        this.getDeptTree();
        this.saveFormVisible = true;
			},
			//显示新增界面
			handleAdd: function () {
        this.title = "添加";
				this.saveForm = {
          id: null,
          sn: '',
          name: '',
          state: 1,
          manager_id: null,
          parent_id: null
				};
        // 加载所有的部门经理
        this.getManagers();
        //加载部门树
        this.getDeptTree();
        this.saveFormVisible = true;
			},
			//编辑
			saveSubmit: function () {
				this.$refs.saveForm.validate((valid) => {
					if (valid) {
						this.$confirm('确认提交吗？', '提示', {}).then(() => {
							this.saveLoading = true;
							// 提交部门树的格式处理  [],[1],[1,2,3],null
							let result = this.saveForm.parent_id;
              //如果为null,[] 就赋值为null，后端Long可以接收为null
              if(result==null ||  result.length==0 ){
                this.saveForm.parent_id = null;
              }
              //如果有值：[ 1 ],[ 2, 5, 6 ]  或直接一个数字
              if(result.length){ //没有选过就是之前的部门的话，result.length为undefined，判断为false
                this.saveForm.parent_id = result[result.length-1];
              }else{
                this.saveForm.parent_id = result;
              }

              this.$http.put("/department",this.saveForm).then(res=>{
              if(res.data.success){
                this.getDepartments();
              }else {
                this.$message.error("系统繁忙(500),请稍后重试！")
              }
                this.saveLoading = false;
              }).catch(res=>{
                this.$message.error("系统繁忙(404/400),请稍后重试！")
                this.saveLoading = false;
              })
              // 关闭对话框
              this.saveFormVisible = false;
						});
					}
				});
			},
      // 获取所有的部门经理
      getManagers(){
			  this.$http.get("/employee").then(res=>{
			    this.managers = res.data;
        })
      },
      //11。获取部门树
      getDeptTree(){
        this.$http.get("/department/deptTree").then(res=>{
          this.deptTree = res.data;
        })
      }

		},
		mounted() {
			this.getDepartments();
		}
	}

</script>

<style scoped>

</style>